London city data card: what the official numbers say
Green, global and wettest in autumn, not winter. This card gathers official figures for London: 9.09M people, 20.9M international visits, plus fares, weather by month, rent and prices, food and culture, and facts most guides miss. Every number shows its source and period.
people live in Greater London.
Source: ONS, mid-2024of residents were born outside the UK.
Source: ONS Census 2021of the city is green: parks, habitat and gardens.
Source: GiGL, Jan 2026Explore London, then compare it
Four things about London most guides miss
people live in the City of London, the Square Mile. It grew 11.1% in a year, the fastest of any council area in England and Wales.
Source: ONS, mid-2024is London's wettest month on average (68 mm), with November close behind. Winter months are drier than autumn.
Source: Met Office, Kew 1991 to 2020passengers passed through Heathrow on 1 August 2025, its busiest day ever.
Source: Heathrow, 2025babies were born in London in 2024, down from 134,000 in 2012.
Source: ONS via Trust for LondonCompare London with another city
Side-by-side figures and a map showing both cities and the distance between them. The comparison is factual and never ranks one city above the other.
Go to the source for London
Tourism, transport, airport, visas, weather, health and city data, straight from the official publishers. Links open in a new tab. Every figure on the card lists its own source; the full list is at the bottom of the card.
For general information only, not travel, legal, tax, immigration, investment or financial advice. Official data can be revised, so check the original source before you decide. Data sources and disclaimer.
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